Master Ultra Thin Réserve de Marche

ref. 1372520

Pure lines and a perfectly balanced dial create a beautiful stage-setting for one of the most emblematic mechanical complications. Two classic complications – a power-reserve indication and a pointer-type date display – are elegantly associated in this model: A sapphire crystal caseback reveals its automatic Calibre 938.

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The Réserve de Marche, Master Ultra Thin Réserve de Marche

A complex system of differential gears ensures the power reserve is clearly indicated, and converts the energy accumulated by the Calibre Jaeger-LeCoultre 938 into units of time, self-winding mechanical movement.

A very fine case, Master Ultra Thin Réserve de Marche

Balanced proportions and a diameter of 39 mm bring new-found elegance to one of the most emblematic mechanical complications.